David mcfarland



D. MQFARLAND. RAILROAD TRUGKL N0.-'77,505. Patented May 5,v 1868.

DAVID McFARLAND, OF WORCESTER. MASSACHUSETTS Letters P 1%.. 72505; dated May 5, 1868.

IMPROVEMENT IN RAILROAD-TRUCKS.

Gite l$rlphule tifsmh in in ttm'fizttm 33am ant making and at the same.

KNOW ALL MEN BY THESE PRESENTS:

That I, DAVID McFARLAND, of the city and county of Worcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Railroad-Trucks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanyingldrawings, forming a part of this specification, in which Figure 1 represents an end view of a. truck with one set of wheels, having my improvements applied thereto.

Figure '2 represents a top-or plan view of the same.

Figure 3 represents a cross-sectiou on line a b, fig. 2, and

Figure 4 represents a longitudinal central section on line 0 d, fig. 1.

To enable those skilled in. the art to which'my invention'belongs to make and use the same, Iwill proceed to describe it more in detail. I

In the drawings, the'wheels A A are fastened to the axle B, the projecting ends a a being turned to lit the boxes or hearings in the side supporting-pieces G O. A tube, D, is placed upon the axle B, before the wheels are fastened on, the ends of said tube,in this instance entering recesses or grooves turned orformed in the hubs of the wheels A A, as fully indicated in the drawings. Tube D is supported in this instance by two clampingpieees, E E, which are clamped or screwed together soas to hold said tube in afirm and secure manner, and free of the axle. v p

The clamping-pieces EE arejfastened at their ends to the cross-pieces F, which in turn are fastened to the side-pieces G of the truck-frame. 1

.H is a shield or wheel-cover, the ends of which rest upon and are supported by the truck side-pieces G. The inner side at of the wheel-cover H rests upon one of the'cross-pieces F.

From the foregoing description 'it will be observed that the axle B is guarded, so that if it breaks it cannot, become displaced immediately, since the tube D will-retuinit in proper position until the train can be stopped.

Again, by the use of a wheel-cover or shield H, the car would not.drop, even if the axle broke, since the I wheel would be retained in an upright position bythe end-piece 0,. and the cross-pieces F upon the inside of the wheel, whilethe shield would strike uponthe top of the wheel, thereby supporting the body of the car, to give time for stopping the train.

The tube D may besupported from the truck-frame in any proper manner, by hangers or braces, or otherwise. I have shown one good mode of supporting it. i I

Should the axle B forany purpose be made in two pieces, the-combinationtherewith of a tubular protector will zidd very much to the security and safety of the device. I

' By letting-the ends of the tubeprojeet into the ends of the hubs of the wheels, they become supports to the car in case of the breaking of an axle, resting as they then would upon the hubs of the wheels for a support.

The hole in the part I) may be made oblong, or otherwise, to give room for the axle while theear is in motion.

The clamping-pieces E E, even without the tube D, 'may be made to answer a good purpose, to prevent the,

deflection of the journal or axle in case of its breaking, although I prefer to. use the-tube D in combination with them. A wheel-shield or cover is to be'applied to each wheel.

I It is evident that my improvements maybe carried out and applied in various wayswithorit departing from the principle of my invention. I prefer to make the tube D ofplatc iron. V

Having deseribed'my improved railroad-truck, what I cl 'im therein as. new, andof myinvention, and desire to secure by Letters Patent, is---- j p 1. The combination, with the Tairle or journal of a set of caruvheels, of an axle-protector or guard, substantially as and for the purposes set forth. 7

2. The combination, with the axle of a set of car-wheels, of .a tubular protector, for the purposes set forth.

3. The combination, with the axle of a set of car-wheels, of a guard-piece, E, or its equivalent, on each side of the'joui iial or axle f or the purpose of prevenfingthe deflection of the axle, in case of it breaking.

4. The ,comblnatiol l, with the axle B ahd wheels A A, of the tube D, clamping-pieces E E, and Moss supporting-pieces F F, substantially 'as and forthe pin-poses set forth.

5. The combination, with the truck and wheels,-of a wheel-prottor, shild, or cover H, substantially as and for the purposes set forth.

. DAVID McFARLAND.

Witnesses:

Tnos. H. Doves, D. L. MILLEB.. 

